package com.itheima.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.common.R;
import com.itheima.dao.Employee;
import com.itheima.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;
    /**
     * 员工登录
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee){

        //1、将页面提交的密码password进行md5加密处理
        String password = employee.getPassword();
        String s = DigestUtils.md5DigestAsHex(password.getBytes());


        //2、根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> qw = new LambdaQueryWrapper<>();
        qw.eq(Employee::getUsername,employee.getUsername());
        Employee emp = employeeService.getOne(qw);

        //3、如果没有查询到则返回登录失败结果
        if(emp == null&&!emp.getPassword().equals(s)){
            return R.error("登录失败");
        }



        //5、查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        if(emp.getStatus() == 0){
            return R.error("账号已禁用");
        }

        //6、登录成功，将员工id存入Session并返回登录成功结果
        request.getSession().setAttribute("employee",emp.getId());
        return R.success(emp);
    }
    /**
     * 员工退出
     * @param request
     * * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request){
        //清理Session中保存的当前登录员工的id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }
    /**
     * 新增员工
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(HttpServletRequest request,@RequestBody Employee employee){
        log.info("新增员工，员工信息：{}",employee.toString());

        //设置初始密码123456，需要进行md5加密处理
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());
        //获得当前登录用户的id
        Long employee1 = (Long) request.getSession().getAttribute("employee");
        employee.setCreateUser(employee1);
        employee.setUpdateUser(employee1);

        employeeService.save(employee);
        return R.success("新增员工成功");

       
    }
             /**
              * 员工信息分页查询
              * @param page 当前查询页码
              * @param pageSize 每页展示记录数
              * @param name 员工姓名 - 可选参数
              * @return
              */
             @GetMapping("/page")
             public R<Page> page(int page, int pageSize, String name){
                 log.info("page = {},pageSize = {},name = {}" ,page,pageSize,name);
                 //构造分页构造器
                 Page page1 = new Page(page, pageSize);

             
                 //构造条件构造器
                 LambdaQueryWrapper<Employee> qw = new LambdaQueryWrapper<>();


                 //添加过滤条件
                 qw.like(StringUtils.isNotEmpty(name),Employee::getName,name);


                 //添加排序条件
                 qw.orderByDesc(Employee::getUpdateTime);

             
                 //执行查询
                 employeeService.page(page1,qw);
                 return R.success(page1);
             }
    /**
     * 根据id修改员工信息
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(HttpServletRequest request,@RequestBody Employee employee){
        log.info(employee.toString());

        Long empId = (Long)request.getSession().getAttribute("employee");

        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(empId);
        employeeService.updateById(employee);

        return R.success("员工信息修改成功");
    }
    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        log.info("根据id查询员工信息...");
        Employee employee = employeeService.getById(id);
        if(employee != null){
            return R.success(employee);
        }
        return R.error("没有查询到对应员工信息");
    }


}